They've both lost money on the consoles, but Sony used the PS3 as the launchpad for their BlueRay format, and over the next few years they'll make the money back on BlueRay sales so they won't lose overall.

But, having succeeded with the BlueRay do they have any reason to bring another console out? Since as the PS3 is upgradable I'd be surprised if we see one before that 10 year estimate, but if they have another format to launch (and I suspect they will in the next decade) then I'd expect a major part to be a console.

As for Microsoft I think we might see one more from them becuase of the money they can throw at it, but only if they can manage to keep 360 numbers above the PS3.